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Finding the Fourth Proportional to 368,654.16, 552,981 and 210,771.90

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Solution

The fourth proportional to 368,654.16, 552,981 and 210,771.90 is: 316,157.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,654.16 : 552,981 = 210,771.90 : x
  2. Step 2: Convert to fraction form
    368,654.16/552,981 = 210,771.90/x
  3. Step 3: Cross multiply
    368,654.16x = 552,981 × 210,771.90
  4. Step 4: Simplify right side
    368,654.16x = 116,552,856,033.90
  5. Step 5: Solve for x
    x = 116,552,856,033.90/368,654.16
  6. Step 6: Final answer
    x = 316,157.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.